Does Kuro Mizu actually work? Fluid-balance formula, data and who it suits (Singapore 2026)

Short answer: ZENSO Kuro Mizu is for people who aren't fat, just puffy. A salty meal plus a day sitting down makes your body hold water and salt, so your face is swollen in the morning and your shoes are tight by evening. Kuro Mizu is a fluid-balance formula: 1,000 mg of patented CactiNea™ cactus fruit extract a sachet, with 3% juniper berries extract. One sachet when you wake helps your body let go of the extra water and salt it held overnight. In a study of the lead ingredient, CactiNea™, the heavy-leg feeling dropped 67% after 7 days. It is a health functional food, not a medicine, and results vary. Drink it for a full 30 days, then use the 30-day money-back guarantee to judge for yourself.

The key points

• What it is: a ready-to-drink fluid-balance sachet. 30 sachets a box, 10 ml and 7 kcal each, plum and berry flavour. Tear and drink.
• How it works: CactiNea™ cactus fruit and juniper help your body release extra water and salt. Meadowsweet, ginger, Japanese red plum and 1,000-day fermented Kagoshima black vinegar support water balance and digestion.
• The data: three results from a CactiNea™ ingredient study (not a study of Kuro Mizu itself), plus the product label. Sources are listed below.
• Who it suits: people with a puffy face or fingers on waking, salty-food lovers who eat out or tapau most days, people who sit or stand for long hours in air-con, and anyone at a normal weight who still looks puffy.
• Who should check first: pregnant or breastfeeding women, anyone on medication (especially diuretics or blood-pressure medicine), and anyone with kidney or heart problems or a long-term condition should ask a doctor first. Swelling that comes on suddenly, hurts or won't go away needs a doctor.

Why are you still puffy in the morning when you eat less and drink more water?

Puffiness usually isn't from eating too much. It's water your body is holding. Eat salty, and your body keeps water to balance the extra sodium. Sit all day in the air-con, and that water settles in your ankles and calves. Overnight it's still there, so you're puffiest when you wake.

• Eating less: costs you energy, not water. The salt and the sitting are still there, so the water stays.
• Drinking lots of water: enough water is right, but water alone doesn't deal with the salt.
• Ice, massage, sweating: moves things for an hour. After one night's sleep it's back.

Kuro Mizu changes the timing. It works when you wake, when the water is there, and helps your body release the water and salt stored through the night.

How does the formula match the problem?

How should you read the numbers?

We split the data into two groups and name the source of each.

CactiNea™ ingredient study (2 g a day, 15 women, 7 days)

• Heavy-leg feeling down 67%
• Swelling feeling in feet, ankles and calves down 68%
• 87% convinced it worked

Kuro Mizu product label

• CactiNea™ cactus fruit extract 10%, juniper berries extract 3%
• 10 ml a sachet: 7 kcal, 0.5 g sugars, 2 mg sodium
• Kagoshima black vinegar fermented for 1,000 days

The ingredient study shows what the lead ingredient can do. It is not a trial of Kuro Mizu, and it doesn't mean you will get the same result. How much salt you eat, how long you sit and how much water you drink all differ from person to person.

What safety testing has it passed?

• Halal certified by JAKIM
• SGS: 365 drugs screened, none found; no heavy metals
• Bio Synergy: no harmful microbes
• Halvec: no porcine DNA
• Classified as a food by Singapore's NPRA

How do you tell if it suits you?

1. Check the signs: a puffy face on waking, a ring that gets tight by afternoon, tight shoes and sock marks by evening. These are often the same thing: your body holding water.
2. Take it every morning: one sachet as soon as you wake. At night it disturbs your sleep and misses the puffiest time.
3. Track three things: your face in the mirror when you wake, whether your ring or watch is tight in the afternoon, and the sock marks on your ankles in the evening. Note them once a week. That beats going by memory.
4. Help it along: cut back on salt, drink enough water and keep moving.
5. Use the guarantee: drink it for 30 days. No genuine difference? Message your advisor for a full refund.

Frequently asked questions

How many kilos will I lose with Kuro Mizu?

We don't give kilo numbers. Kuro Mizu works on retained water and salt: what goes first is water, not fat. To work on fat and blood sugar as well, look at ZENSO Advance or Pro.

Is the CactiNea™ study a study of Kuro Mizu?

No. It is a study of the ingredient CactiNea™: 2 g a day, 15 women, 7 days. It shows what the lead ingredient can do. Kuro Mizu itself was not trialled.

My weight is normal. Why do I still look puffy?

Because often it isn't fat, it's held water. Salty food and long hours sitting make your body hold water, and it shows first in your face, ankles and calves. Kuro Mizu is made for exactly this.

When will I notice anything?

Everyone is different. Days 1–3: perhaps a few more bathroom trips in the morning. Week 1: a less puffy face on waking. Weeks 2–4: lighter legs. See how long Kuro Mizu takes to work.

I'm already on a ZENSO set. Do I need to buy it separately?

ZENSO Advance, Pro, GLPro and the Keep Burn Set each include 1 box of Kuro Mizu, so no. ZENSO Lite doesn't include it; to add the water pillar, add this box on its own.

Buy or learn more

For the full formula, prices and packs, go to the Kuro Mizu product page. Still unsure? Ask an advisor on Messenger, no purchase needed.